feat: initialize project structure, modules and configurations

src/lib.rs

@@ -0,0 +1,7 @@
+pub mod module_a;
+pub mod module_b;
+pub mod structs;
+
+pub use module_a::{ModuleA, ModuleAError};
+pub use module_b::{ModuleB, ModuleBError};
+pub use structs::SharedMessage;